[HIPIFY] Statistics to CSV file dumping revise

+ Add option -print-stats-csv to dump statistics to CSV file
+ If -o-dir is specified, CSV file will be dumped there
+ Generate 1 summary file sum_stat.csv in case of multiple sources


[ROCm/hip commit: 3b40e53cff]

projects/hip/hipify-clang/src/ArgParse.cpp

@@ -104,6 +104,11 @@ cl::opt<bool> PrintStats("print-stats",
   cl::value_desc("print-stats"),
   cl::cat(ToolTemplateCategory));
 
+cl::opt<bool> PrintStatsCSV("print-stats-csv",
+  cl::desc("Print translation statistics in CSV file"),
+  cl::value_desc("print-stats-csv"),
+  cl::cat(ToolTemplateCategory));
+
 cl::opt<std::string> OutputStatsFilename("o-stats",
   cl::desc("Output filename for statistics"),
   cl::value_desc("filename"),